21430281

素因数分解:

$3^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1\times {\mathrm{661}}^1$

素因数の和:872

約数の個数: 16

約数和(自身を含む): 29170368

約数和(自身を除く): 7740087

約数列:

[1, 3, 101, 107, 303, 321, 661, 1983, 10807, 32421, 66761, 70727, 200283, 212181, 7143427, 21430281]

約数ペア:

[(1, 21430281), (3, 7143427), (101, 212181), (107, 200283), (303, 70727), (321, 66761), (661, 32421), (1983, 10807)]